William e



(No'Model.)

W. R. PITT.

FOLDING GATE. y No. 352,660. Patented Nov. 16, 1886.

PETERS. PmIo-umognwher, wnhingmn. n.6.

NrTnD STATES PATENT Orricne WILLIAM B. PITT, OF NEW YORK, N. Y.

FOLDING GATE.

SPECIFICATION forming part of Letters Patent No. 352,660, dated November 16, 1886.

Application filed March Q2, 1886. Serial No. 196,090.

To all whom it may concern:

Be it known that I, WILLIAM R. PITT, of the city and county of New York, in the State of New York, have invented a certain new `and useful Improvement in Folding Gates, of

Y so bent as to interfere with their proper operation; and the invention consists in novel combinations of parts, which are hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is an elevation ot' a folding gate embodying my invention, the same being extended. Fig. 2 is a horizontal section upon the plane of the dotted line x a?, Fig. l. Fig. 3 is a horizontal section upon a larger scale, and upon the same dotted line a: x, oi' one of the side uprights of the gate. and the connection which the lazytong levers have therewith, and Fig. 4 is a horizontal section upon the plane ofthe dotted line y g/,Fig 1, and upon the same scale as Fig. 3.

Similar letters of reference designate corresponding parts in all the figures.

A Al designate the upright side portions of the gate, and B the system of lazy-tong levers which connects such side portions. The bars composing the system of lazy-tong levers are pivoted together at their points of intersection b, and it will be readily understood that the side portion A may be moved toward and from the side portion A in a horizontal plane, the lazy-tong levers B permitting such movement and closing the space between the side portions when they are expanded to their great'- est distance apart.

The lazytong levers B are composed of channel-bars, which are arranged back to back, with their flanges presented outward in opposite directions, as will be understood from Figs. l and 2. The rivets b, whereby the channelbars are connected at their points of crossing,

(No model.)

are inserted between the iianges of the channel-bars, and by such flanges the heads and ends of the rivets are shielded and protected.

The system of lazy-tong levers composed of'55 channel-bars arranged as described, and pivoted together, is very much stiffer than would be a similar system of levers composed of at bar-iron, and hence the gate is not liable to be warped or bent so as to interfere` with the proper operation of the lazy-tong levers.

The upright side portions, A A', of the gate are. each composed of two channel-bars, C, which are arranged j ust the reverse of the bars composing the lazy-tong levers B, the bars C being arrangetl-t'ace to face, with their flanges presented inward or toward each other.

In order properly to connect the lazy-tong levers B with the side portions, A A', I employ pins or rivets c, which are here represented as near the top of the lazy-tong levers, and these pins or rivets form the tiXed centers for the operation of the lazy-tong levers.

In the sarne'vertical planes with the pins or rivets c there are pins c', connecting the lazytong levers; but in order to permit the proper operation of the levers these pins c must rise and fall relatively to the upright side portions, A A', and they constitute movable centers for the operation of the lazy-tong levers. The pins c are inserted directly through both the channel-bars O, Acomposing the upright side portions, A A', and through the lazy-tong levers B, las' best shown in Fig-4, Washers d being introduced between the lazy-tong levers themselves and between such levers and the channel-bars O, in order to permit them to work freely. By the pins or rivets c the channel-bars O, composing theupright side portions, A A', are held at t-he proper distance apart, and they'rnay also be connected near their upper and lower ends by pins or rivets c2, which aid in holding them at proper distances apart.

Those pivot-pins, c', of the lazy-tong levers 'which have to be movable relatively to the upright side portions, A A', do not project through the channel-bars C of said side portions, but are of a length to extend through the channel-bars B at their points of intersection, and to enter the channels in the bars C of the upright side portions, as shown in Fig. 3. Inasmuch as the channel-bars C of the up- IOO ' right side portions are held at proper distances apart, the pins c will permanently connect theV to secure by Letters Patent, is v 1. The combination, with upright bars or sides, of lazy-tong levers connecting them', and composed of channel-bars arranged back to back, with their flanges presented outward,

and rivetsfconnecting the channelibars at their points of crossing and inserted between and shielded by the anges thereof, substantially as herein described.

l 2; Ina foldingv gate, the combination, with lazy-tong levers, of upright sides, each composed' of `ehimnel-bers 1arrangedp 'face to face, with vtheir'llges preseiitedinwa'rd, pins or rivets inserted through the lazy-tong levers and the channel-'bars of the upright sides and forming Xed centers for the operation of the .leversyan'd other pins' connecting the levers and entering between and guided by the flanges of the channel-bars composing the sides andforming the movable centers for the operscribed.

" WM. n. PITT.

Witn esses FREDK. HAYNES, M. LIVNnni/LAn.

ation of the levers, substantially as herein'de- 

